feat: promote to 1.0.0 (#309)

* feat: promote to 1.0.0

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* deps: update dependency com.google.cloud:google-cloud-pubsublite-parent to v1.5.5 (#310)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-pubsublite-parent](https://togithub.com/googleapis/java-shared-config) | `1.5.4` -> `1.5.5` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-pubsublite-parent/1.5.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-pubsublite-parent/1.5.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-pubsublite-parent/1.5.5/compatibility-slim/1.5.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-pubsublite-parent/1.5.5/confidence-slim/1.5.4)](https://docs.renovatebot.com/merge-confidence/) |

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* feat: add build scripts for native image testing in Java 17 (#1440) (#311)

Source-Link: googleapis/synthtool@505ce5a
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:2567a120ce90fadb6201999b87d649d9f67459de28815ad239bce9ebfaa18a74

* feat: version bump kafka-clients to 3.1.0 and clean up assorted warnings (#312)

* feat: version bump kafka-clients to 3.1.0 and clean up assorted warnings

* feat: version bump kafka-clients to 3.1.0 and clean up assorted warnings

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: WhiteSource Renovate <bot@renovateapp.com>
Co-authored-by: gcf-owl-bot[bot] <78513119+gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: dpcollins-google <40498610+dpcollins-google@users.noreply.github.com>

.repo-metadata.json

@@ -4,7 +4,7 @@
   "product_documentation": "https://cloud.google.com/pubsub/lite/docs",
   "api_description": "Pub/Sub Lite is a zonal, real-time messaging service that lets you send and receive messages between independent applications. You can manually configure the throughput and storage capacity for Pub/Sub Lite systems.",
   "client_documentation": "https://cloud.google.com/java/docs/reference/pubsublite-kafka/latest/history",
-  "release_level": "preview",
+  "release_level": "stable",
   "transport": "grpc",
   "requires_billing": true,
   "language": "java",

README.md

@@ -8,9 +8,6 @@ Java idiomatic client for [Pub/Sub Lite Kafka Shim][product-docs].
 - [Product Documentation][product-docs]
 - [Client Library Documentation][javadocs]
 
-> Note: This client is a work-in-progress, and may occasionally
-> make backwards-incompatible changes.
-
 
 ## Quickstart
 
@@ -225,9 +222,6 @@ and on [google-cloud-java][g-c-j].
 This library follows [Semantic Versioning](http://semver.org/).
 
 
-It is currently in major version zero (``0.y.z``), which means that anything may change at any time
-and the public API should not be considered stable.
-
 
 ## Contributing
 
@@ -268,7 +262,7 @@ Java is a registered trademark of Oracle and/or its affiliates.
 [kokoro-badge-link-4]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-pubsublite-kafka/java8-win.html
 [kokoro-badge-image-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-pubsublite-kafka/java11.svg
 [kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-pubsublite-kafka/java11.html
-[stability-image]: https://img.shields.io/badge/stability-preview-yellow
+[stability-image]: https://img.shields.io/badge/stability-stable-green
 [maven-version-image]: https://img.shields.io/maven-central/v/com.google.cloud/pubsublite-kafka.svg
 [maven-version-link]: https://search.maven.org/search?q=g:com.google.cloud%20AND%20a:pubsublite-kafka&core=gav
 [authentication]: https://github.com/googleapis/google-cloud-java#authentication